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The average age of a man and his son is 18 years. The ratio of their ages is 5:1 respectively. What will be the

The average age of a man and his son is 18 years. The ratio of their ages is 5:1 respectively. What will be the ratio of their ages after 6 years? 1. 10:3 2. 5:2 3. 4:3 4. 3:1 5. None of these

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